COMMVAULT SYSTEMS INC - FORM 10-Q - EX-32.1 - CEO CERTIFICATION PURSUANT TO SECTION 906 - August 4, 2011

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10-Q - FORM 10-Q - COMMVAULT SYSTEMS INCd10q.htm
EX-31.1 - CEO CERTIFICATION PURSUANT TO SECTION 302 - COMMVAULT SYSTEMS INCdex311.htm
EX-32.2 - CFO CERTIFICATION PURSUANT TO SECTION 906 - COMMVAULT SYSTEMS INCdex322.htm
EX-31.2 - CFO CERTIFICATION PURSUANT TO SECTION 302 - COMMVAULT SYSTEMS INCdex312.htm
EXCEL - IDEA: XBRL DOCUMENT - COMMVAULT SYSTEMS INCFinancial_Report.xls

Exhibit 32.1

Certification Pursuant To

18 U.S.C. Section 1350

As Adopted Pursuant To

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of CommVault Systems, Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2011 as filed with the Securities and Exchange Commission (the “Report”), I, N. Robert Hammer, Chairman, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

 

  (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

 

  (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

 

/s/ N. ROBERT HAMMER

N. Robert Hammer
Chairman, President and Chief Executive Officer

August 4, 2011

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